Method of manufacturing a carbon fiber wheel rim

Abstract

A method of manufacturing a carbon fiber wheel rim is provided, including flowing steps of: preparing a core ring, including a core material which is disintegrable and annular; continuously obliquely winding at least one first dry carbon yarn around the core ring, to form a first semifinished rim; placing the first semifinished rim in a mold, and performing vacuuming, resin injection and thermoforming, to form a second semifinished rim; removing the second semifinished rim out of the mold, and disintegrating and removing the core material.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to a method of manufacturing a carbon fiber wheel rim.Description of the Prior Art[0002]A conventional method of manufacturing a carbon fiber rim includes following steps: pre-immersing carbon fiber sheets in resin, pasting the carbon fiber sheets with the resin on an annular core (such as a bladder) into several layers, and placing the processed annular core in a mold and molding by thermoforming.[0003]However, the conventional method has many disadvantages. For example, the conventional method requires more resin to pre-immerse the carbon fiber sheets; the pre-immersed carbon fiber sheets need to be pasted by manpower, which is time-consuming and labor-intensive; directions of carbon fibers of the carbon fiber sheets are inconsistent and discontinuous, and transmission of stress may be discontinuous when the carbon fiber sheets are overlapped with each other so that structural integrity and struct...

AI Technical Summary

Benefits of technology

The present invention is a method of making a carbon fiber wheel rim that is easy, efficient, and produces a high yield. The wheel rim made by this method has good strength and structure.

Problems solved by technology

However, the conventional method has many disadvantages.

For example, the conventional method requires more resin to pre-immerse the carbon fiber sheets; the pre-immersed carbon fiber sheets need to be pasted by manpower, which is time-consuming and labor-intensive; directions of carbon fibers of the carbon fiber sheets are inconsistent and discontinuous, and transmission of stress may be discontinuous when the carbon fiber sheets are overlapped with each other so that structural integrity and structural strength of the wheel rim are poor; each of the overlaps of the carbon fiber sheets has large, many and uneven gaps which may result in more large bubbles after the thermoforming and low yield.

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